PMID- 33096655 OWN - NLM STAT- MEDLINE DCOM- 20210623 LR - 20231019 IS - 2218-273X (Electronic) IS - 2218-273X (Linking) VI - 10 IP - 10 DP - 2020 Oct 21 TI - Alpha-Synuclein in Alcohol Use Disorder, Connections with Parkinson's Disease and Potential Therapeutic Role of 5' Untranslated Region-Directed Small Molecules. LID - 10.3390/biom10101465 [doi] LID - 1465 AB - Alpha-synuclein (alpha-Syn) is a 140-amino acid (aa) protein encoded by the Synuclein alpha SNCA gene. It is the synaptic protein associated with Parkinson's disease (PD) and is the most highly expressed protein in the Lewy bodies associated with PD and other alpha synucleopathies, including Lewy body dementia (LBD) and multiple system atrophy (MSA). Iron deposits are present in the core of Lewy bodies, and there are reports suggesting that divalent metal ions including Cu(2+) and Fe(2+) enhance the aggregation of alpha-Syn. Differential expression of alpha-Syn is associated with alcohol use disorder (AUD), and specific genetic variants contribute to the risk for alcoholism, including alcohol craving. Spliced variants of alpha-Syn, leading to the expression of several shorter forms which are more prone to aggregation, are associated with both PD and AUD, and common transcript variants may be able to predict at-risk populations for some movement disorders or subtypes of PD, including secondary Parkinsonism. Both PD and AUD are associated with liver and brain iron dyshomeostasis. Research over the past decade has shown that alpha-Syn has iron import functions with an ability to oxidize the Fe(3+) form of iron to Fe(2+) to facilitate its entry into cells. Our prior research has identified an iron-responsive element (IRE) in the 5' untranslated region (5'UTR) of alpha-Syn mRNA, and we have used the alpha-Syn 5'UTR to screen for small molecules that modulate its expression in the H4 neuronal cell line. These screens have led us to identify several interesting small molecules capable of both decreasing and increasing alpha-Syn expression and that may have the potential, together with the recently described mesenchymal stem cell therapies, to normalize alpha-Syn expression in different regions of the alcoholic and PD brain. FAU - Cahill, Catherine M AU - Cahill CM AD - Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA. FAU - Aleyadeh, Rozaleen AU - Aleyadeh R AD - Weill Cornell Medicine-Qatar, Qatar Foundation, Doha 24144, Qatar. FAU - Gao, Jin AU - Gao J AD - Department of Clinical Psychology, Qilu Hospital of Shandong University, Qingdao 266011, China. FAU - Wang, Changning AU - Wang C AD - Athinoula A. Martinos Center for Biomedical Imaging Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA. FAU - Rogers, Jack T AU - Rogers JT AD - Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA. LA - eng GR - R21 NS059434/NS/NINDS NIH HHS/United States GR - R21 NS064853/NS/NINDS NIH HHS/United States GR - R21 NS077079/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20201021 PL - Switzerland TA - Biomolecules JT - Biomolecules JID - 101596414 RN - 0 (5' Untranslated Regions) RN - 0 (SNCA protein, human) RN - 0 (Small Molecule Libraries) RN - 0 (alpha-Synuclein) SB - IM MH - 5' Untranslated Regions/genetics MH - Alcoholism/*genetics/pathology/therapy MH - Brain/drug effects/metabolism MH - Gene Expression Regulation/drug effects MH - Humans MH - Lewy Bodies/drug effects/metabolism MH - Neurons/drug effects/metabolism MH - Parkinson Disease/*genetics/pathology MH - Small Molecule Libraries/*chemistry/therapeutic use MH - alpha-Synuclein/*genetics/therapeutic use PMC - PMC7589448 OTO - NOTNLM OT - alcohol OT - alpha synuclein OT - iron homeostasis OT - small molecules COIS- The authors declare no conflict of interest. EDAT- 2020/10/25 06:00 MHDA- 2021/06/24 06:00 PMCR- 2020/10/01 CRDT- 2020/10/24 01:00 PHST- 2020/07/30 00:00 [received] PHST- 2020/09/28 00:00 [revised] PHST- 2020/10/09 00:00 [accepted] PHST- 2020/10/24 01:00 [entrez] PHST- 2020/10/25 06:00 [pubmed] PHST- 2021/06/24 06:00 [medline] PHST- 2020/10/01 00:00 [pmc-release] AID - biom10101465 [pii] AID - biomolecules-10-01465 [pii] AID - 10.3390/biom10101465 [doi] PST - epublish SO - Biomolecules. 2020 Oct 21;10(10):1465. doi: 10.3390/biom10101465.